Finding the Third Proportional to 228,001.50 and 342,123

Step by Step Solution

1. Step 1: Write the proportion equation
   228,001.50 : 342,123 = 342,123 : x
2. Step 2: Convert to fraction form
   228,001.50/342,123 = 342,123/x
3. Step 3: Cross multiply
   228,001.50x = 342,123 × 342,123
4. Step 4: Simplify right side
   228,001.50x = 117,048,147,129
5. Step 5: Solve for x
   x = 117,048,147,129/228,001.50
6. Step 6: Final answer
   x = 513,365.69